From: "Zhao1, Wei" <wei.zhao1@intel.com>
To: Thomas Monjalon <thomas.monjalon@6wind.com>,
"Mcnamara, John" <john.mcnamara@intel.com>
Cc: "dev@dpdk.org" <dev@dpdk.org>, "Lu, Wenzhuo" <wenzhuo.lu@intel.com>
Subject: Re: [dpdk-dev] [PATCH v4 1/3] lib/librte_ether: add support for port reset
Date: Thu, 6 Apr 2017 02:57:29 +0000 [thread overview]
Message-ID: <A2573D2ACFCADC41BB3BE09C6DE313CA0207A0EC@PGSMSX103.gar.corp.intel.com> (raw)
In-Reply-To: <2969664.trJitADFWx@xps13>
Hi, Thomas
> -----Original Message-----
> From: Thomas Monjalon [mailto:thomas.monjalon@6wind.com]
> Sent: Friday, March 31, 2017 3:55 AM
> To: Zhao1, Wei <wei.zhao1@intel.com>; Mcnamara, John
> <john.mcnamara@intel.com>
> Cc: dev@dpdk.org; Lu, Wenzhuo <wenzhuo.lu@intel.com>
> Subject: Re: [dpdk-dev] [PATCH v4 1/3] lib/librte_ether: add support for port
> reset
>
> Hi,
>
> Please help reviewers, use --in-reply-to to keep patches threaded.
>
Ok， I will use that use --in-reply-to in later when commit patch.
> 2017-03-30 17:34, Wei Zhao:
> > Add support for port reset in rte layer.This reset feature can not
> > only used in vf port reset in later code develop, but alsopf port.But
> > in this patch set, we only limit the discussion scope to vf reset.
> > This patch Add an API to restart the device.
> > It's for VF device in this scenario, kernel PF + DPDK VF.
> > When the PF port down->up, APP should call this API to restart VF
> > port. Most likely, APP should call it in its management thread and
> > guarantee the thread safe. It means APP should stop the rx/tx and the
> > device, then restart the device, then recover the device and rx/tx.
> > Also, it's APP's responsibilty to release the occupied memory.
>
> Which memory should be released?
That is a redundancy now, because the older version need to allocation some memory for this feature,
But it do not need now. So I will delete it in next version.
>
> [...]
> /**
> > + * Reset an ethernet device when it's not working. One scenario is,
> > + after PF
> > + * port is down and up, the related VF port should be reset.
> > + * The API will stop the port, clear the rx/tx queues, re-setup the
> > + rx/tx
> > + * queues, restart the port.
>
> s/The API/This function/
>
> Please explain exactly the responsibility of this function, and how it is
> different from calling stop/configure/start.
In this reset feature, reset function can do the calling stop/configure/start process, but also
It can also do some restore work for the port, for example, it can restore the added parameters
of vlan, mac_addrs, promisc_unicast_enabled falg and promisc_multicast_enabled flag.
Maybe , I should add this explanation in the patch comments or function comments?
>
> > + * Before calling this API, APP should stop the rx/tx. When tx is
> > +being stopped,
> > + * APP can drop the packets and release the buffer instead of sending
> them.
> > + *
> > + * @param port_id
> > + * The port identifier of the Ethernet device.
> > + *
> > + * @return
> > + * - (0) if successful.
> > + * - (-ENODEV) if port identifier is invalid.
> > + * - (-ENOTSUP) if hardware doesn't support this function.
> > + */
> > +int
> > +rte_eth_dev_reset(uint8_t port_id);
>
> Please John, could you help with the API documentation here?
Thank you for John, please contact me if any puzzle.
next prev parent reply other threads:[~2017-04-06 2:57 UTC|newest]
Thread overview: 53+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-03-30 9:34 [dpdk-dev] [PATCH v4 0/3] net/i40e: vf " Wei Zhao
2017-03-30 9:34 ` [dpdk-dev] [PATCH v4 1/3] lib/librte_ether: add support for " Wei Zhao
2017-03-30 19:55 ` Thomas Monjalon
2017-04-06 2:57 ` Zhao1, Wei [this message]
2017-04-06 7:11 ` Thomas Monjalon
2017-04-06 8:53 ` Zhao1, Wei
2017-04-06 9:02 ` Ananyev, Konstantin
2017-04-10 20:58 ` Thomas Monjalon
2017-04-13 8:55 ` Zhao1, Wei
2017-04-13 10:06 ` Thomas Monjalon
2017-04-14 1:29 ` Zhao1, Wei
2017-04-14 6:31 ` Thomas Monjalon
2017-04-14 8:03 ` Zhao1, Wei
2017-04-17 2:08 ` Zhao1, Wei
2017-04-17 5:02 ` Zhao1, Wei
2017-04-20 6:07 ` Yuanhan Liu
2017-04-20 9:17 ` Zhao1, Wei
2017-04-21 2:27 ` Yuanhan Liu
2017-04-21 8:27 ` Thomas Monjalon
2017-04-21 8:59 ` Zhao1, Wei
2017-04-21 9:28 ` Thomas Monjalon
2017-04-24 2:01 ` Yuanhan Liu
2017-04-24 3:15 ` Zhao1, Wei
2017-04-24 3:39 ` Zhao1, Wei
2017-04-24 8:04 ` Thomas Monjalon
2017-04-25 3:14 ` Zhao1, Wei
2017-04-21 8:55 ` Zhao1, Wei
2017-03-30 9:34 ` [dpdk-dev] [PATCH v4 2/3] net/i40e: implement device reset on port Wei Zhao
2017-03-30 9:34 ` [dpdk-dev] [PATCH v4 3/3] app/testpmd: add port reset command into testpmd Wei Zhao
2017-03-30 12:32 ` [dpdk-dev] [PATCH v4 0/3] net/i40e: vf port reset Wu, Jingjing
2017-04-05 5:42 ` Zhao1, Wei
2017-04-06 6:33 ` [dpdk-dev] [PATCH v5 " Wei Zhao
2017-04-06 6:33 ` [dpdk-dev] [PATCH v5 1/3] lib/librte_ether: add support for " Wei Zhao
2017-04-06 6:33 ` [dpdk-dev] [PATCH v5 2/3] net/i40e: implement device reset on port Wei Zhao
2017-04-06 6:33 ` [dpdk-dev] [PATCH v5 3/3] app/testpmd: add port reset command into testpmd Wei Zhao
2017-04-06 6:51 ` [dpdk-dev] [PATCH v6 0/3] net/i40e: vf port reset Wei Zhao
2017-04-06 6:51 ` [dpdk-dev] [PATCH v6 1/3] lib/librte_ether: add support for " Wei Zhao
2017-04-07 6:58 ` Yang, Qiming
2017-04-10 2:21 ` Zhao1, Wei
2017-04-06 6:51 ` [dpdk-dev] [PATCH v6 2/3] net/i40e: implement device reset on port Wei Zhao
2017-04-06 6:51 ` [dpdk-dev] [PATCH v6 3/3] app/testpmd: add port reset command into testpmd Wei Zhao
2017-04-10 3:02 ` [dpdk-dev] [PATCH v7 0/3] net/i40e: vf port reset Wei Zhao
2017-04-10 3:02 ` [dpdk-dev] [PATCH v7 1/3] lib/librte_ether: add support for " Wei Zhao
2017-04-20 20:49 ` Thomas Monjalon
2017-04-21 3:20 ` Zhao1, Wei
2017-04-20 20:52 ` Thomas Monjalon
2017-04-10 3:02 ` [dpdk-dev] [PATCH v7 2/3] net/i40e: implement device reset on port Wei Zhao
2017-04-20 21:12 ` Thomas Monjalon
2017-04-21 3:39 ` Zhao1, Wei
2017-04-20 21:20 ` Thomas Monjalon
2017-04-10 3:02 ` [dpdk-dev] [PATCH v7 3/3] app/testpmd: add port reset command into testpmd Wei Zhao
2017-04-20 21:37 ` [dpdk-dev] [PATCH v7 0/3] net/i40e: vf port reset Thomas Monjalon
-- strict thread matches above, loose matches on Subject: below --
2017-03-30 9:21 [dpdk-dev] [PATCH v4 " Wei Zhao
2017-03-30 9:21 ` [dpdk-dev] [PATCH v4 1/3] lib/librte_ether: add support for " Wei Zhao
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